- From: Miles, AJ \(Alistair\) <A.J.Miles@rl.ac.uk>
- Date: Wed, 19 Oct 2005 12:19:33 +0100
- To: "Leonard Will" <L.Will@willpowerinfo.co.uk>, <public-esw-thes@w3.org>, "Stella Dextre Clarke \(E-mail\)" <SDClarke@lukehouse.demon.co.uk>, "Ron Davies \(E-mail\)" <ron@rondavies.be>
> Secondly, I'm *guessing* that under pre-coordinate indexing, > an indexer could make the following two types of indexing > assignment (inventing my own syntax): > > doc | subject > ---------------------------------- > 1 | cut flowers, crop production > 2 | cut flowers + crop production > > In the first assignment, the indexer wishes to state that the > subjects of document 1 are cut flowers, and crop production, > although not necessarily the production of cut flowers. In > the second assignment, the indexer explicitly wishes to state > that the subject of document 2 is (cut flowers + crop > production) i.e. cut flower production. > > How does the searcher then distinguish between these two > statements? I'm guessing that under traditional search > systems, a boolean search string such as 'cut flowers AND > crop production' will not be able to distinguish between the > two statements (because it's implemented via some sort of > sub-string comparison), and will return both documents, is > that correct? Is this something like the problem of 'false > hits' that you mentioned previously Leonard? If not, can you > describe the problem of 'false hits' that you mentioned? Or is the problem of 'false hits' that if you have an indexing assignment e.g. ... doc | subject --------------------------------------------------------------- 3 | calcimycin + standards, aspirin + administration & dosage ... then a searcher querying for 'calcimycin AND administration & dosage' meaning to find documents about the administration and dosage of calcymicin, would erroneously receive document 3 in the result set? Cheers, Al.
Received on Wednesday, 19 October 2005 11:19:40 UTC